PMID- 14690140 OWN - NLM STAT- MEDLINE DCOM- 20040106 LR - 20220317 IS - 0300-9742 (Print) IS - 0300-9742 (Linking) VI - 32 IP - 5 DP - 2003 TI - HLA-DRB1 genes and disease severity in rheumatoid arthritis in Turkey. PG - 277-80 AB - OBJECTIVE: Association with human leukocyte antigen (HLA)-DRB alleles, implicated in the aetiopathogenesis of rheumatoid arthritis (RA), is found to be different in various ethnic groups. This study aimed to investigate DRB1 alleles in RA patients in Turkey, and to examine the effect of these alleles on disease severity. METHODS: We performed PCR-based DRBI genotyping of 104 RA patients recruited from clinical settings and 110 healthy controls. HLA DRB1 alleles frequencies in RA patients and healthy controls were determined. Phenotype frequencies of patients and controls were compared. Disease severity was assessed by radiological erosion, presence of extra-articular involvement, and functional index. RESULTS: Significant differences were in the frequencies of DRB1*04 (46.2% versus 20.9%, p < 0.001), DRB1*0401 (10.6% versus 0%, p < 0.001), DRB1*0405 (8.7% versus 0%, p = 0.001), DRB1* 0404 (15.4% versus 3.6%, p < 0.01), DRB1*01 (21.2% versus 10.9%, p < 0.05) and DRB1*0101 (16.3% versus 5.5%, p = 0.01) between RA patients and controls. HLA-DRB1 alleles did not show any association with seropositivity, extra-articular involvement, radiological erosion, or functional index. CONCLUSION: Our results suggest that the HLA-DRB1 alleles, particularly HLA-DRB1*04 and subtypes, were associated with RA. FAU - Kinikli, G AU - Kinikli G AD - Department of Clinical Immunology and Rheumatology, Ankara University Medical School, Ankara, Turkey. FAU - Ates, A AU - Ates A FAU - Turgay, M AU - Turgay M FAU - Akay, G AU - Akay G FAU - Kinikli, S AU - Kinikli S FAU - Tokgoz, G AU - Tokgoz G LA - eng PT - Journal Article PL - England TA - Scand J Rheumatol JT - Scandinavian journal of rheumatology JID - 0321213 RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) RN - 0 (HLA-DRB1*04:01 antigen) SB - IM MH - Activities of Daily Living MH - Adult MH - Aged MH - Arthritis, Rheumatoid/epidemiology/*genetics/*physiopathology MH - Female MH - Gene Frequency MH - *Genetic Predisposition to Disease MH - Genome, Human MH - HLA-DR Antigens/*genetics MH - HLA-DRB1 Chains MH - Humans MH - Male MH - Middle Aged MH - *Severity of Illness Index MH - Turkey/epidemiology EDAT- 2003/12/24 05:00 MHDA- 2004/01/07 05:00 CRDT- 2003/12/24 05:00 PHST- 2003/12/24 05:00 [pubmed] PHST- 2004/01/07 05:00 [medline] PHST- 2003/12/24 05:00 [entrez] AID - 10.1080/03009740310003901 [doi] PST - ppublish SO - Scand J Rheumatol. 2003;32(5):277-80. doi: 10.1080/03009740310003901.